Display device with electrostatic capacitive touch panel

ABSTRACT

Provided is a display device with an electrostatic capacitive touch panel including a display panel having a first side that extends in a first direction and a second side that extends in a second direction intersecting the first direction, an electrostatic capacitive touch panel having a third side that extends in the first direction and a fourth side that extends in the second direction, a circuit substrate having a fifth side that extends in the first direction and a sixth side that extends in the second direction, a first flexible substrate that is pulled out from the first side of the display panel, intersects the fifth side, and is coupled to the circuit substrate, and a second flexible substrate that is pulled out from the fourth side of the electrostatic capacitive touch panel, intersects the sixth side, and is coupled to the circuit substrate.

The present application is based on, and claims priority from JPApplication Serial Number 2019-179376, filed Sep. 30, 2019, thedisclosure of which is hereby incorporated by reference here in itsentirety.

BACKGROUND 1. Technical Field

The present disclosure relates to a display device with an electrostaticcapacitive touch panel.

2. Related Art

In the related art, a display device with an electrostatic capacitivetouch panel has been proposed. In general, the display device with theelectrostatic capacitive touch panel has a display panel that displaysan image, an electrostatic capacitive touch panel that detects acontact, a circuit substrate provided with a control circuit thatcontrols the display panel and the electrostatic capacitive touch panel,a flexible substrate for a display panel that couples the display paneland the circuit substrate to each other, and a flexible substrate for atouch panel that couples the electrostatic capacitive touch panel andthe circuit substrate to each other (for example, see JP-A-2009-258935).

In the display device with the electrostatic capacitive touch panel inthe related art, when viewed from a direction perpendicular to thedisplay panel, the flexible substrate for a display panel and theflexible substrate for a touch panel overlap each other. Therefore, asignal transmitted from the flexible substrate for a display panel issuperimposed on a signal transmitted from the flexible substrate for atouch panel as noise, and there is a problem in that a detection resultof contact by an electrostatic capacitive touch panel cannot beaccurately grasped.

SUMMARY

According to an aspect of the present disclosure, to solve the aboveproblem, there is provided a display device with an electrostaticcapacitive touch panel including a display panel having a first sidethat extends in a first direction and a second side that extends in asecond direction intersecting the first direction, an electrostaticcapacitive touch panel having a third side that extends in the firstdirection and a fourth side that extends in the second direction, acircuit substrate having a fifth side that extends in the firstdirection and a sixth side that extends in the second direction, a firstflexible substrate that is pulled out from the first side of the displaypanel, intersects the fifth side, and is coupled to the circuitsubstrate, and a second flexible substrate that is pulled out from thefourth side of the electrostatic capacitive touch panel, intersects thesixth side, and is coupled to the circuit substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating an example of a configuration ofa tablet terminal according to an embodiment of the present disclosure.

FIG. 2 is a block diagram illustrating an example of a configuration ofa display panel.

FIG. 3 is a block diagram illustrating an example of a configuration ofan electrostatic capacitive touch panel.

FIG. 4 is an exploded perspective view illustrating an example of aschematic structure of the tablet terminal.

FIG. 5 is a plan view illustrating an example of a schematic structureof the tablet terminal.

FIG. 6 is a cross-sectional view illustrating an example of a schematicstructure of the tablet terminal.

FIG. 7 is a cross-sectional view illustrating an example of a schematicstructure of the tablet terminal.

FIG. 8 is an exploded perspective view illustrating an example of aschematic structure of a tablet terminal according to a comparativeexample.

FIG. 9 is a cross-sectional view illustrating an example of a schematicstructure of the tablet terminal according to a comparative example.

FIG. 10 is a plan view illustrating an example of a schematic structureof a tablet terminal according to Modification Example 1.

FIG. 11 is a plan view illustrating an example of a schematic structureof a tablet terminal according to Modification Example 2.

FIG. 12 is a cross-sectional view illustrating an example of a schematicstructure of a tablet terminal according to Modification Example 3.

FIG. 13 is a cross-sectional view illustrating an example of a schematicstructure of a tablet terminal according to Modification Example 4.

FIG. 14 is a cross-sectional view illustrating an example of a schematicstructure of a tablet terminal according to Modification Example 5.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, an embodiment for carrying out the present disclosure willbe described with reference to the drawings. However, in each drawing,the size and scale of each part are appropriately different from theactual ones. Further, the embodiment described below is a desiredspecific example of the present disclosure, so various technicallydesirable limitations are attached, but the scope of the presentdisclosure is not limited to these forms unless otherwise specified inthe following description.

A. Embodiment

In the present embodiment, a display device with an electrostaticcapacitive touch panel will be described by exemplifying a tabletterminal 1.

1. Overview of Tablet Terminal

Hereinafter, the overview of the tablet terminal 1 according to thepresent embodiment will be described with reference to FIGS. 1 to 3.

FIG. 1 is a functional block diagram illustrating an example of afunctional configuration of the tablet terminal 1.

As illustrated in FIG. 1, the tablet terminal 1 includes a control unit2, a display panel 3, an electrostatic capacitive touch panel 4, and atouch panel drive circuit 5.

The control unit 2 includes a display control circuit 21 that controlsthe display panel 3, a touch panel control circuit 22 that controls theelectrostatic capacitive touch panel 4, and a power supply circuit 23that supplies electric power to the display panel 3, the electrostaticcapacitive touch panel 4, and the touch panel drive circuit 5. In thefollowing, the display control circuit 21 and the touch panel controlcircuit 22 may be referred to as “a control circuit”.

By supplying a control signal Ctr1 that defines an operation of thedisplay panel 3 and an image signal Vid that indicates an image to bedisplayed on the display panel 3 to the display panel 3, the displaycontrol circuit 21 controls the display panel 3 so that the displaypanel 3 displays the image indicated by the image signal Vid. In thepresent embodiment, as an example, it is assumed that the image signalVid is an analog signal. By supplying a control signal Ctr2 that definesan operation of the touch panel drive circuit 5 to the touch panel drivecircuit 5 that drives the electrostatic capacitive touch panel 4, thetouch panel control circuit 22 controls the electrostatic capacitivetouch panel 4 via the touch panel drive circuit 5. The touch panel drivecircuit 5 generates a control signal Ctr-S for controlling a drive ofthe electrostatic capacitive touch panel 4 based on the control signalCtr2, and supplies the generated control signal Ctr-S to theelectrostatic capacitive touch panel 4. When the electrostaticcapacitive touch panel 4 is driven by the control signal Ctr-S, theelectrostatic capacitive touch panel 4 detects a contact of an objectsuch as a finger or a pen on the electrostatic capacitive touch panel 4and outputs a detection signal VSS indicating the detection result. Thetouch panel drive circuit 5 generates a contact position signal ISSindicating a contact position of the object with respect to theelectrostatic capacitive touch panel 4 based on the detection signalVSS, and outputs the generated contact position signal ISS to the touchpanel control circuit 22.

The power supply circuit 23 supplies a drive voltage Pw1 for driving thedisplay panel 3 to the display panel 3, and supplies a drive voltage Pw2for driving the electrostatic capacitive touch panel 4 and the touchpanel drive circuit 5 to the electrostatic capacitive touch panel 4 andthe touch panel drive circuit 5. In the present embodiment, the drivevoltage Pw1 is higher than the drive voltage Pw2.

FIG. 2 is a block diagram illustrating an example of a configuration ofthe display panel 3.

As illustrated in FIG. 2, the display panel 3 includes a display portion31 provided with a plurality of pixels Px, and a drive circuit 32 thatdrives the display portion 31.

The display portion 31 includes M rows of scanning lines 33 that extendin the +X direction, N columns of data lines 34 that extend in the +Ydirection, and (M×N) pixels Px that correspond to (M×N) intersectionsbetween the M rows of scanning lines 33 and N columns of data lines 34and that are arranged in a matrix of N columns in the +X direction and Mrows in the +Y direction.

In the present embodiment, as an example, it is assumed that the value Mis a natural number that satisfies M 270 and the value N is a naturalnumber that satisfies N 480. Further, in the present embodiment, as anexample, it is assumed that the display portion 31 has a size of 4.3inches or more. However, the present disclosure is not limited to suchan aspect, and the value M may be at least a natural number thatsatisfies M 200, and the value N may be at least a natural number thatsatisfies N 300. The display portion 31 may have a size of at least 4inches or more.

The +Y direction is a direction intersecting the +X direction.Hereinafter, the direction orthogonal to the +X direction and the +Ydirection is referred to as the +Z direction. Further, hereinafter, theopposite direction of the +X direction is referred to as the −Xdirection, the opposite direction of the +Y direction is referred to asthe −Y direction, and the opposite direction of the +Z direction isreferred to as the −Z direction. In the following, the +X direction andthe −X direction may be collectively referred to as the X axisdirection, the +Y direction and the −Y direction may be collectivelyreferred to as the Y axis direction, and the +Z direction and the −Zdirection may be collectively referred to as the Z axis direction. Inthe present embodiment, the case where the X axis direction and the Yaxis direction are orthogonal to each other is assumed as an example.

The drive circuit 32 includes a scanning line drive circuit 321 and adata line drive circuit 322.

The scanning line drive circuit 321 generates a selection signal Gw[m]for selecting a scanning line 33 at the m-th row based on the controlsignal Ctr1. The scanning line drive circuit 321 outputs the selectionsignal Gw[m] in the m-th horizontal scanning period of the M horizontalscanning periods included in a frame period defined by the controlsignal Ctr1. Accordingly, the scanning line drive circuit 321 cansequentially select the scanning lines 33 at the first row to the M-throw in the frame period. The variable m is a natural number thatsatisfies 1≤m≤M.

The data line drive circuit 322 generates a gradation designating signalVd[n] designating a gradation to be displayed in the pixels Px based onthe image signal Vid, and outputs the generated gradation designatingsignal Vd[n] to the data line 34 at the n-th column in the m-thhorizontal scanning period in which the scanning line 33 at the m-th rowis selected by the scanning line drive circuit 321. The variable n is anatural number that satisfies 1≤n≤N. Further, in the present embodiment,the image signal Vid is a signal including the gradation designatingsignals Vd[1] to Vd[N].

As described above, the drive circuit 32 outputs the selection signalGw[m] for selecting the scanning line 33 at the m-th row in the m-thhorizontal scanning period, and outputs the gradation designating signalVd[n] to the data line 34 at the n-th column. Thereby, the drive circuit32 can display a gradation designated by the gradation designatingsignal Vd[n] with respect to the pixel Px at the m-th row and the n-thcolumn.

FIG. 3 is a block diagram illustrating an example of a configuration ofthe electrostatic capacitive touch panel 4 and the touch panel drivecircuit 5.

As illustrated in FIG. 3, the electrostatic capacitive touch panel 4includes (Q×R) touch sensors Ts arranged in a matrix of Q columns in the+X direction and R rows in the +Y direction, and (Q×R) detection lines41 corresponding to (Q×R) touch sensors Ts one-to-one. In the presentembodiment, as an example, it is assumed that the value Q is a naturalnumber that satisfies Q≥11 and the value R is a natural number thatsatisfies R≥19. However, the present disclosure is not limited to suchan aspect, and the values Q and R may be natural numbers that at leastsatisfy “(Q×R)≥200”.

The touch sensor Ts has a capacitive element. When an object contactsthe touch sensor Ts, for example, potentials of the two electrodesincluded in the capacitive element provided in the touch sensor Tsfluctuate.

The touch panel drive circuit 5 generates a control signal Ctr-S basedon the control signal Ctr2, and outputs the generated control signalCtr-S to the electrostatic capacitive touch panel 4. The control signalCtr-S is a signal for instructing a touch sensor Ts[Q][R] at the q-throw and the r-th column to output a detection signal Vs[Q][R] indicatinga potential of one of the two electrodes included in each touch sensorTs to the detection line 41 that is provided corresponding to the touchsensor Ts[Q][R]. Thereby, the touch panel drive circuit 5 can receivethe supply of the (Q×R) detection signals Vs from the (Q×R) touchsensors Ts. The detection signal VSS described above is, for example, asignal including (Q×R) detection signals Vs. The touch panel drivecircuit 5 generates the contact position signal ISS based on the (Q×R)detection signals Vs included in the detection signal VSS, and outputsthe generated contact position signal ISS to the control unit 2.

In the present embodiment, as an example, it is assumed that the touchpanel drive circuit 5 drives the electrostatic capacitive touch panel 4so that the detection signal Vs is output 100 times or more per secondfrom each touch sensor Ts. However, the present disclosure is notlimited to such an aspect, and the touch panel drive circuit 5 onlyneeds to be able to drive the electrostatic capacitive touch panel 4 sothat the detection signal Vs is output 90 times or more per second fromeach touch sensor Ts.

2. Structure of Tablet Terminal

Hereinafter, the structure of the tablet terminal 1 will be describedwith reference to FIGS. 4 to 7.

FIG. 4 is an exploded perspective view for explaining an example of thestructure of the tablet terminal 1. FIG. 5 is a plan view of the controlunit 2 provided in the tablet terminal 1 as viewed from the +Zdirection. FIG. 6 is a schematic diagram schematically representing thecross-sectional structure of the tablet terminal 1 when the tabletterminal 1 is viewed from the +X direction. FIG. 7 is a schematicdiagram schematically representing the cross-sectional structure of thetablet terminal 1 when the tablet terminal 1 is viewed from the +Ydirection.

The tablet terminal 1 includes a metal frame 6, a flexible substrate fora display panel F1, a flexible substrate for a touch panel F2, inaddition to the control unit 2, the display panel 3, the electrostaticcapacitive touch panel 4, and the touch panel drive circuit 5 describedabove. The control unit 2 also includes a control substrate 200 providedwith a display control circuit 21, a touch panel control circuit 22, anda power supply circuit 23.

As illustrated in FIG. 4, the display panel 3 has a side H1 that extendsin the +X direction and a side H2 that extends in the +Y direction whenviewed from the −Z direction. In the present embodiment, as an example,it is assumed that the side H1 is longer than the side H2. Further, theelectrostatic capacitive touch panel 4 has a side H3 that extends in the+X direction and a side H4 that extends in the +Y direction when viewedfrom the −Z direction. In this embodiment, as an example, it is assumedthat the side H3 is longer than the side H4. The control substrate 200has a side H5 that extends in the +X direction and a side H6 thatextends in the +Y direction when viewed from the −Z direction. In thepresent embodiment, as an example, it is assumed that the side H5 islonger than the side H6.

Further, in the present embodiment, as illustrated in FIG. 4, it isassumed that the display panel 3 is provided between the electrostaticcapacitive touch panel 4 and the metal frame 6, and the metal frame 6 isprovided between the display panel 3 and the control substrate 200. Inthe present embodiment, the display panel 3 and the control substrate200 are fixed to the metal frame 6.

Further, in the present embodiment, as an example, when viewed from the−Z direction, it is assumed that the electrostatic capacitive touchpanel 4, the display panel 3, the metal frame 6, and the controlsubstrate 200 are provided such that a part or all of the electrostaticcapacitive touch panel 4 and a part or all of the display panel 3overlap each other, a part or all of the display panel 3 and a part orall of the metal frame 6 overlap each other, and a part or all of themetal frame 6 and a part or all of the control substrate 200 overlapeach other.

In the following, as illustrated in FIGS. 6 and 7, of the two surfacesincluded in the control substrate 200 that are perpendicular to the +Zdirection, a surface on the −Z side is referred to as a surface D1, anda surface on the +Z side is referred to as a surface D2. The surface D1is fixed to the metal frame 6.

As illustrated in FIG. 4, the flexible substrate for a display panel F1couples the display panel 3 and the control substrate 200 to each other.Specifically, the flexible substrate for a display panel F1 is providedso as to be coupled to the display panel 3 at the side H1 and intersectthe control substrate 200 at the side H5 when viewed from the −Zdirection. The flexible substrate for a display panel F1 is coupled to aconnector CN1 provided on a surface D2 of the control substrate 200. Asillustrated in FIGS. 4, 5 and 6, the flexible substrate for a displaypanel F1 is provided so as to be coupled to the display panel 3 at theside H1 from the −Y direction, to extend in the +Y direction at a partintersecting the control substrate 200 at the side H5, and to be coupledto the connector CN1 from the −Y direction. Further, in the presentembodiment, as illustrated in FIG. 6, it is assumed that the flexiblesubstrate for a display panel F1 passes through the −Y side of the metalframe 6 and the −Y side of the control substrate 200 as an example.

In the present embodiment, the flexible substrate for a display panel F1is coupled to the display panel 3 at the side H1, but the presentdisclosure is not limited to such an aspect. The flexible substrate fora display panel F1 may be provided, for example, so as to intersect thedisplay panel 3 at the side H1 and to extend more +Y side than the sideH1.

The display control circuit 21 supplies the image signal Vid and thecontrol signal Ctr1 to the display panel 3 via the wiring provided onthe flexible substrate for a display panel F1. Further, the power supplycircuit 23 supplies a drive voltage Pw1 to the display panel 3 via thewiring provided on the flexible substrate for a display panel F1.

As illustrated in FIG. 4, the flexible substrate for a touch panel F2couples the electrostatic capacitive touch panel 4 and the controlsubstrate 200 to each other. Specifically, when viewed from the −Zdirection, the flexible substrate for a touch panel F2 is provided so asto be coupled to the electrostatic capacitive touch panel 4 at the sideH4 and to intersect the control substrate 200 at the side H6. Theflexible substrate for a touch panel F2 is coupled to a connector CN2provided on the surface D2 of the control substrate 200. As illustratedin FIGS. 4, 5 and 7, the flexible substrate for a touch panel F2 isprovided so as to be coupled to the electrostatic capacitive touch panel4 at the side H4 from the −X direction, to extend in the +X direction ata part intersecting the control substrate 200 at the side H6, and to becoupled to the connector CN2 from the −X direction.

In the present embodiment, the flexible substrate for a touch panel F2is coupled to the electrostatic capacitive touch panel 4 at the side H4,but the present disclosure is not limited to such an aspect. Theflexible substrate for a touch panel F2 may be provided, for example, soas to intersect the electrostatic capacitive touch panel 4 at the sideH4 and to extend more +X side than the side H4.

Further, as illustrated in FIG. 7, the flexible substrate for a touchpanel F2 has two surfaces that are a surface B1 and a surface B2 whichis positioned between the surface B1 and the control substrate 200. Thetouch panel drive circuit 5 is mounted on the surface B1 of the flexiblesubstrate for a touch panel F2 as a semiconductor element. Further, anantistatic material 51 is provided on the surface B2 of the flexiblesubstrate for a touch panel F2 to prevent the flexible substrate for atouch panel F2 and the touch panel drive circuit 5 from being charged.

The touch panel control circuit 22 supplies the control signal Ctr2 tothe touch panel drive circuit 5 via the wiring provided on the flexiblesubstrate for a touch panel F2. The power supply circuit 23 supplies thedrive voltage Pw2 to the electrostatic capacitive touch panel 4 and thetouch panel drive circuit 5 via the wiring provided on the flexiblesubstrate for a touch panel F2. The touch panel drive circuit 5 suppliesthe control signal Ctr-S to the electrostatic capacitive touch panel 4via the wiring provided on the flexible substrate for a touch panel F2and outputs the contact position signal ISS to the control unit 2.Further, the electrostatic capacitive touch panel 4 supplies thedetection signal VSS to the touch panel drive circuit 5 via the wiringprovided on the flexible substrate for a touch panel F2.

As can be understood from FIG. 5, the flexible substrate for a displaypanel F1 and the flexible substrate for a touch panel F2 are provided sothat the flexible substrate for a display panel F1 and the flexiblesubstrate for a touch panel F2 do not overlap each other when viewedfrom the Z axis direction. Further, the flexible substrate for a displaypanel F1 and the flexible substrate for a touch panel F2 are providedsuch that a direction in which the flexible substrate for a displaypanel F1 extends and a direction in which the flexible substrate for atouch panel F2 extends, are substantially orthogonal to each other whenviewed from the −Z direction. The term “substantially orthogonal” is aconcept including not only the case of being orthogonal but also thecase of being orthogonal in design, and the case of being considered tobe orthogonal except for an error such as a manufacturing error.

3. Comparative Example

Hereinafter, in order to clarify the effect of the present embodiment,the structure of a tablet terminal 1Z according to a comparative examplewill be described with reference to FIGS. 8 and 9.

FIG. 8 is an exploded perspective view for explaining an example of thestructure of the tablet terminal 1Z according to the comparativeexample. FIG. 9 is a schematic diagram schematically representing thecross-sectional structure of the tablet terminal 1Z when the tabletterminal 1Z is viewed from the +Y direction.

As illustrated in FIGS. 8 and 9, in the tablet terminal 1Z according tothe comparative example, the flexible substrate for a display panel F1is provided so as to be coupled to the display panel 3 at the side H2and to intersect the control substrate 200 at the side H6 when viewedfrom the −Z direction, and the flexible substrate for a touch panel F2is provided so as to be coupled to the electrostatic capacitive touchpanel 4 at the side H4 and to intersect the control substrate 200 at theside H6 when viewed from the −Z direction. More specifically, in thetablet terminal 1Z according to the comparative example, the flexiblesubstrate for a display panel F1 is provided so as to be coupled to thedisplay panel 3 at the side H2 from the −X direction, to extend in the+X direction at a part intersecting the control substrate 200 at theside H6, and to be coupled to the connector CN1 from the −X direction.Further, in the tablet terminal 1Z according to the comparative example,the flexible substrate for a touch panel F2 is provided so as to becoupled to the electrostatic capacitive touch panel 4 at the side H4from the −X direction, to extend in the +X direction at a partintersecting the control substrate 200 at the side H6, and to be coupledto the connector CN2 from the −X direction. Furthermore, in the tabletterminal 1Z according to the comparative example, the flexible substratefor a display panel F1 and the flexible substrate for a touch panel F2are provided so that the flexible substrate for a display panel F1 andthe flexible substrate for a touch panel F2 overlap each other whenviewed from the −Z direction.

In the tablet terminal 1Z according to the comparative example, when acurrent flows through the wiring provided on the flexible substrate fora display panel F1, an annular-shape magnetic field is generated on aplane perpendicular to the wiring in a direction perpendicular to thewiring. In the tablet terminal 1Z according to the comparative example,the flexible substrate for a display panel F1 and the flexible substratefor a touch panel F2 overlap each other when viewed from the −Zdirection, and the flexible substrate for a display panel F1 and theflexible substrate for a touch panel F2 are provided so as to besubstantially parallel to each other. Therefore, an inducedelectromotive force is generated in the wiring provided on the flexiblesubstrate for a touch panel F2 due to the influence of the magneticfield generated due to the current flowing in the wiring provided on theflexible substrate for a display panel F1. Therefore, in the tabletterminal 1Z according to the comparative example, there is a problem inthat a magnetic field is generated due to the image signal Vidtransmitted by the wiring provided on the flexible substrate for adisplay panel F1, the induced electromotive force based on the magneticfield is superimposed on the detection signal VSS transmitted by thewiring provided on the flexible substrate for a touch panel F2 as noise,and thus the detection result of the touch on the electrostaticcapacitive touch panel 4 cannot be accurately grasped.

In contrast to this, in the tablet terminal 1 according to the presentembodiment, the flexible substrate for a display panel F1 and theflexible substrate for a touch panel F2 are provided so as not tooverlap each other when viewed from the −Z direction. Therefore,according to the present embodiment, compared with the comparativeexample, the influence of the magnetic field generated due to thecurrent flowing through the wiring provided on the flexible substratefor a display panel F1 with respect to the signal transmitted by thewiring provided on the flexible substrate for a touch panel F2 can bereduced.

Further, in the tablet terminal 1 according to the present embodiment,the flexible substrate for a display panel F1 and the flexible substratefor a touch panel F2 are provided so as to be substantially orthogonalto each other when viewed from the −Z direction. Therefore, according tothe present embodiment, compared with the comparative example, theinfluence of the magnetic field generated due to the current flowingthrough the wiring provided on the flexible substrate for a displaypanel F1 with respect to the signal transmitted by the wiring providedon the flexible substrate for a touch panel F2 can be reduced.

As described above, according to the present embodiment, it is possibleto reduce the possibility that the detection result of the touch on theelectrostatic capacitive touch panel 4 cannot be accurately grasped, ascompared with the case of the comparative example.

4. Round-Up of Embodiment

As described above, the tablet terminal 1 according to the presentembodiment includes the display panel 3 having the side H1 that extendsin the X axis direction and the side H2 that extends in the Y axisdirection, the electrostatic capacitive touch panel 4 having the side H3that extends in the X axis direction and the side H4 that extends in theY axis direction, a control substrate 200 having the side H5 thatextends in the X axis direction and the side H6 that extends in the Yaxis direction, a flexible substrate for a display panel F1 which ispulled out from the side H1 of the display panel 3, intersects with theside H5, and is coupled to the control substrate 200, and a flexiblesubstrate for a touch panel F2 which is pulled out from the side H4 ofthe electrostatic capacitive touch panel 4, intersects with the side H6,and is coupled to the control substrate 200.

That is, according to the present embodiment, since the flexiblesubstrate for a display panel F1 and the flexible substrate for a touchpanel F2 do not overlap with each other when viewed from the Z axisdirection, as compared with the case where the flexible substrate for adisplay panel F1 and the flexible substrate for a touch panel F2 overlapeach other when viewed from the Z axis direction, the noise that issuperimposed on the signal transmitted by the flexible substrate for atouch panel F2 due to the signal transmitted by the flexible substratefor a display panel F1 can be reduced.

Further, according to the present embodiment, the direction in which theflexible substrate for a display panel F1 extends can be made tointersect with the direction in which the flexible substrate for a touchpanel F2 extends. That is, according to the present embodiment, ascompared with the case where the direction in which the flexiblesubstrate for a display panel F1 extends and the direction in which theflexible substrate for a touch panel F2 extends are substantiallyparallel, the noise that is superimposed on the signal transmitted bythe flexible substrate for a touch panel F2 due to the signaltransmitted by the flexible substrate for a display panel F1 can bereduced.

As described above, according to the present embodiment, the situationin which the detection result of the touch on the electrostaticcapacitive touch panel 4 cannot be accurately grasped, is able to beprevented.

In the present embodiment, the tablet terminal 1 is an example of “adisplay device with an electrostatic capacitive touch panel”, thecontrol substrate 200 is an example of “a circuit substrate”, theflexible substrate for a display panel F1 is an example of “a firstflexible substrate”, the flexible substrate for a touch panel F2 is anexample of “a second flexible substrate”, the side H1 is an example of“a first side”, the side H2 is an example of “a second side”, the sideH3 is an example of “a third side”, the side H4 is an example of “afourth side”, the side H5 is an example of “a fifth side”, the side H6is an example of “a sixth side”, the +X direction or the −X direction isan example of “a first direction”, and the +Y direction or the −Ydirection is an example of “a second direction”.

Further, in the tablet terminal 1 according to the present embodiment,the display panel 3 is provided between the electrostatic capacitivetouch panel 4 and the control substrate 200.

According to the present embodiment, as compared with the case where theelectrostatic capacitive touch panel 4 is provided between the displaypanel 3 and the control substrate 200, the noise propagating from thecontrol substrate 200 to the electrostatic capacitive touch panel 4 canbe reduced. That is, according to the present embodiment, the situationin which the detection result of the touch on the electrostaticcapacitive touch panel 4 cannot be accurately grasped, is able to beprevented.

Further, in the tablet terminal 1 according to the present embodiment,the flexible substrate for a display panel F1 extends in the Y axisdirection at a part intersecting the side H5 of the control substrate200, the flexible substrate for a touch panel F2 extends in the X axisdirection at a part intersecting the side H6 of the control substrate200, and the Y axis direction is a direction substantially orthogonal tothe X axis direction.

That is, according to the present embodiment, since the flexiblesubstrate for a display panel F1 and the flexible substrate for a touchpanel F2 are substantially orthogonal to each other, as compared withthe case where the flexible substrate for a display panel F1 and theflexible substrate for a touch panel F2 are not substantially orthogonalto each other, the noise that is superimposed on the signal transmittedby the flexible substrate for a touch panel F2 due to the signaltransmitted by the flexible substrate for a display panel F1 can bereduced. Therefore, according to the present embodiment, the situationin which the detection result of the touch on the electrostaticcapacitive touch panel 4 cannot be accurately grasped, is able to beprevented.

Further, in the tablet terminal 1 according to the present embodiment,the touch panel drive circuit 5 that drives the electrostatic capacitivetouch panel 4 is provided on the surface B1 of the two surfaces includedin the flexible substrate for a touch panel F2.

According to the present embodiment, for example, the electricaldistance between the electrostatic capacitive touch panel 4 and thetouch panel drive circuit 5 can be made shorter as compared with thecase where the touch panel drive circuit 5 is provided on the controlsubstrate 200. Therefore, according to the present embodiment, forexample, as compared with the case where the touch panel drive circuit 5is provided on the control substrate 200, the noise superimposed on thesignal for driving the electrostatic capacitive touch panel 4 can bereduced. In this way, according to the present embodiment, it ispossible to reduce the possibility of a malfunction in the electrostaticcapacitive touch panel 4 and to detect the contact of an object with theelectrostatic capacitive touch panel 4 with high accuracy.

In the present embodiment, the surface B1 is an example of “a firstsurface”.

Further, in the tablet terminal 1 according to the present embodiment,of the two surfaces included in the flexible substrate for a touch panelF2, the surface B2 opposite to the surface B1 is provided with anantistatic material 51 for preventing electrification in the flexiblesubstrate for a touch panel F2 and the touch panel drive circuit 5, andthe surface B2 is a surface on the control substrate 200 side of the twosurfaces included in the flexible substrate for a touch panel F2.

According to the present embodiment, as compared with the case where theantistatic material 51 is not provided, the noise propagating from thecontrol unit 2 including the control substrate 200 to the touch paneldrive circuit 5 can be reduced. Therefore, according to the presentembodiment, it is possible to reduce the possibility of a malfunction inthe electrostatic capacitive touch panel 4 and to detect the contact ofan object with the electrostatic capacitive touch panel 4 with highaccuracy.

In the present embodiment, the surface B2 is an example of “a secondsurface”.

Further, the tablet terminal 1 according to the present embodiment has ametal frame 6 to which the display panel 3 and the control substrate 200are fixed.

According to the present embodiment, even when the tablet terminal 1resonates, a relative position of the display panel 3 with respect tothe control substrate 200 can be suppressed from changing. Therefore,according to the present embodiment, it is possible to suppress thebreak down of the tablet terminal 1 caused by the change in the relativeposition of the display panel 3 with respect to the control substrate200.

Further, in the tablet terminal 1 according to the present embodiment,the control substrate 200 is provided with the power supply circuit 23that supplies the drive voltage Pw1 that drives the display panel 3 tothe display panel 3 and the drive voltage Pw2 that drives theelectrostatic capacitive touch panel 4 to the electrostatic capacitivetouch panel 4, and the drive voltage Pw1 is higher than the drivevoltage Pw2.

In general, when the drive voltage Pw1 that drives the display panel 3is higher than the drive voltage Pw2 that drives the electrostaticcapacitive touch panel 4, compared to when the voltage is lower, theinfluence of the noise caused by the signal that drives the displaypanel 3 on the signal indicating the detection result of the contact ofthe object in the electrostatic capacitive touch panel 4 becomes large.

In contrast to this, in the present embodiment, the flexible substratefor a display panel F1 and the flexible substrate for a touch panel F2do not overlap with each other when viewed from the Z axis direction,and the flexible substrate for a display panel F1 and the flexiblesubstrate for a touch panel F2 are provided in directions intersectingwith each other. Therefore, according to the present embodiment, evenwhen the drive voltage Pw1 is higher than the drive voltage Pw2, thenoise that is superimposed on the signal transmitted by the flexiblesubstrate for a touch panel F2 due to the signal that drives the displaypanel 3 transmitted by the flexible substrate for a display panel F1 canbe reduced. That is, according to the present embodiment, even when thedrive voltage Pw1 is higher than the drive voltage Pw2, the situation inwhich the detection result of the touch on the electrostatic capacitivetouch panel 4 cannot be accurately grasped, is able to be prevented.

Further, in the tablet terminal 1 according to the present embodiment,the side H5 is longer than the side H6.

Generally, the number of pixels Px provided on the display panel 3 islarger than the number of touch sensors Ts provided on the electrostaticcapacitive touch panel 4. Therefore, generally, the number of signalstransmitted and received between the display panel 3 and the controlsubstrate 200 is larger than the number of signals transmitted andreceived between the electrostatic capacitive touch panel 4 and thecontrol substrate 200. Therefore, in general, the flexible substrate fora display panel F1 that couples the display panel 3 and the controlsubstrate 200 to each other is thicker than the flexible substrate fora′touch panel F2 that couples the electrostatic capacitive touch panel 4and the control substrate 200 to each other.

In contrast to this, in the present embodiment, the side H5 intersectingthe flexible substrate for a display panel F1 is longer than the side H6intersecting the flexible substrate for a touch panel F2. Therefore,according to the present embodiment, it is possible to reduce the workload when the flexible substrate for a display panel F1 and the flexiblesubstrate for a touch panel F2 are attached to the tablet terminal 1.

Further, in the tablet terminal 1 according to the present embodiment,the display panel 3 has 300 or more pixels Px arranged in the X axisdirection and 200 or more pixels Px arranged in the Y axis direction.

In general, when the number of pixels Px provided on the display panel 3is large, as compared with the case where the number of pixels is small,the influence of the noise caused by the signal that drives the displaypanel 3 on the signal indicating the detection result of the contact ofthe object in the electrostatic capacitive touch panel 4 becomes large.

In contrast to this, in the present embodiment, the flexible substratefor a display panel F1 and the flexible substrate for a touch panel F2do not overlap with each other when viewed from the Z axis direction,and the flexible substrate for a display panel F1 and the flexiblesubstrate for a touch panel F2 are provided in directions intersectingwith each other. Therefore, according to the present embodiment, evenwhen the number of pixels Px provided on the display panel 3 is large,the noise that is superimposed on the signal transmitted by the flexiblesubstrate for a touch panel F2 due to the signal that drives the displaypanel 3 transmitted by the flexible substrate for a display panel F1 canbe reduced. That is, according to the present embodiment, even when thenumber of pixels Px provided on the display panel 3 is large, thesituation in which the detection result of the touch on theelectrostatic capacitive touch panel 4 cannot be accurately grasped, isable to be prevented.

Further, in the tablet terminal 1 according to the present embodiment,the display panel 3 has a size of 4 inches or more.

According to the present embodiment, even when the number of pixels Pxprovided on the display panel 3 is large, the situation in which thedetection result of the touch on the electrostatic capacitive touchpanel 4 cannot be accurately grasped, is able to be prevented.

Further, in the tablet terminal 1 according to the present embodiment,the electrostatic capacitive touch panel 4 has 200 or more touch sensorsTs.

In the present embodiment, since the flexible substrate for a displaypanel F1 and the flexible substrate for a touch panel F2 do not overlapwith each other and the flexible substrate for a display panel F1 andthe flexible substrate for a touch panel F2 are provided in a directionintersecting with each other when viewed from the Z axis direction, thenoise that is superimposed on the signal transmitted by the flexiblesubstrate for a display panel F1 due to the signal transmitted by theflexible substrate for a touch panel F2 can be reduced. Therefore,according to the present embodiment, even when the number of touchsensors Ts provided on the electrostatic capacitive touch panel 4 islarge, it is possible to suppress the occurrence of a malfunction in thedisplay panel 3.

Further, in the tablet terminal 1 according to the present embodiment,the touch sensor Ts provided in the electrostatic capacitive touch panel4 can detect the presence/absence of contact with the touch sensor Ts 90times or more per second.

According to the present embodiment, the noise that is superimposed onthe signal transmitted by the flexible substrate for a display panel F1due to the signal transmitted by the flexible substrate for a touchpanel F2 can be reduced. Therefore, according to the present embodiment,even when the number of signals transmitted and received by the flexiblesubstrate for a touch panel F2 is large, it is possible to suppress theoccurrence of a malfunction in the display panel 3.

B. Modification Example

Each of the above embodiments can be variously modified. Specificaspects of modification will be exemplified below. Two or more aspectsselected from the following exemplifications can be appropriately mergedwithin a range not inconsistent with each other. In the modificationexamples illustrated below, the elements having the same operations andfunctions as those of the embodiment will be denoted by the referencenumerals referred to in the above description, and detailed descriptionthereof will be appropriately omitted.

Modification Example 1

In the above-described embodiment, among the plurality of sides includedin the control substrate 200, the side where the flexible substrate fora display panel F1 intersects and the side where the flexible substratefor a touch panel F2 intersects are sides adjacent to each other hasbeen illustrated, but the present disclosure is not limited to such anaspect. Among the plurality of sides included in the control substrate200, the side where the flexible substrate for a display panel F1intersects and the side where the flexible substrate for a touch panelF2 intersects may be sides that face each other.

FIG. 10 is a plan view of the tablet terminal 1 according to the presentmodification example, viewed from the +Z direction.

As illustrated in FIG. 10, in the tablet terminal 1 according to thepresent modification example, the flexible substrate for a touch panelF2 intersects with the side H6 included in the control substrate 200when viewed from the Z axis direction, and the flexible substrate for adisplay panel F1 faces the side H6 and intersects the side H7 extends inthe Y axis direction among the plurality of sides included in thecontrol substrate 200 when viewed from the Z axis direction.

In the present modification example, the directions in which theflexible substrate for a display panel F1 and the flexible substrate fora touch panel F2 extend, are both the X axis direction, and as comparedwith the comparative example, the distance between the flexiblesubstrate for a display panel F1 and the flexible substrate for a touchpanel F2 is wide. Therefore, according to this modification example, ascompared with the comparative example, it is possible to reduce theinfluence of the magnetic field generated due to the current flowingthrough the wiring provided on the flexible substrate for a displaypanel F1 on the signal transmitted by the wiring provided on theflexible substrate for a touch panel F2. That is, according to themodification example, as compared with the comparative example, it ispossible to reduce the possibility that the detection result of thetouch on the electrostatic capacitive touch panel 4 cannot be accuratelygrasped.

Modification Example 2

In the above-described embodiment and Modification Example 1, among theplurality of sides included in the control substrate 200, the side wherethe flexible substrate for a display panel F1 intersects and the sidewhere the flexible substrate for a touch panel F2 intersects aredifferent sides has been illustrated, but the present disclosure is notlimited to such an aspect. Among the plurality of sides included in thecontrol substrate 200, the side where the flexible substrate for adisplay panel F1 intersects and the side where the flexible substratefor a touch panel F2 intersects may be the same side. In this case, theflexible substrate for a display panel F1 and the flexible substrate fora touch panel F2 may be provided so as not to overlap each other whenviewed in the Z axis direction.

FIG. 11 is a plan view of the tablet terminal 1 according to the presentmodification example, viewed from the +Z direction.

As illustrated in FIG. 11, in the tablet terminal 1 according to thepresent modification example, the flexible substrate for a touch panelF2 intersects with the side H5 included in the control substrate 200when viewed from the Z axis direction, and the flexible substrate for adisplay panel F1 intersects with the side H5 among the plurality ofsides included in the control substrate 200 and does not overlap theflexible substrate for a touch panel F2 when viewed from the Z axisdirection.

In the present modification example, the directions in which theflexible substrate for a display panel F1 and the flexible substrate fora touch panel F2 extend, are both the Y axis direction, and as comparedwith the comparative example, the distance between the flexiblesubstrate for a display panel F1 and the flexible substrate for a touchpanel F2 is wide. Therefore, according to this modification example, ascompared with the comparative example, it is possible to reduce theinfluence of the magnetic field generated due to the current flowingthrough the wiring provided on the flexible substrate for a displaypanel F1 on the signal transmitted by the wiring provided on theflexible substrate for a touch panel F2. That is, according to themodification example, as compared with the comparative example, it ispossible to reduce the possibility that the detection result of thetouch on the electrostatic capacitive touch panel 4 cannot be accuratelygrasped.

Modification Example 3

In the above-described embodiment and the Modification Examples 1 and 2,the case where the flexible substrate for a display panel F1 passesoutside the area surrounded by the plurality of sides included in themetal frame 6 in the plane where the metal frame 6 is present and isperpendicular to the Z axis direction, has been illustrated. That is, inthe above-described embodiment and the Modification Examples 1 and 2,the case where the flexible substrate for a display panel F1 passes more−Y side than the metal frame 6 in the plane where the metal frame 6 ispresent and is perpendicular to the Z axis direction, has beenillustrated. However, the present disclosure is not limited to such anaspect, and the flexible substrate for a display panel F1 may passthrough the area surrounded by the plurality of sides included in themetal frame 6 in a plane where the metal frame 6 is present and isperpendicular to the Z axis direction.

FIG. 12 is a schematic diagram schematically representing thecross-sectional structure of the tablet terminal 1A when the tabletterminal 1A according to the present modification example is viewed fromthe +X direction. The tablet terminal 1A differs from the tabletterminal 1 according to the embodiment in that a metal frame 6A isprovided instead of the metal frame 6.

As illustrated in FIG. 12, the metal frame 6A has a through hole K1penetrating a surface on the +Z side included in the metal frame 6A anda surface on the −Z side included in the metal frame 6A. In the tabletterminal 1A, the flexible substrate for a display panel F1 is providedso as to pass through the through hole K1. In the tablet terminal 1A, asin the tablet terminal 1 according to the embodiment, the flexiblesubstrate for a touch panel F2 passes through more −X side than themetal frame 6A and does not pass through the through hole K1, asillustrated in FIG. 7.

That is, the tablet terminal 1A according to the present modificationexample includes the display panel 3 that displays an image, theelectrostatic capacitive touch panel 4 that detects the presence/absenceof contact, the control substrate 200 provided with a control circuitthat controls the display panel 3 and the electrostatic capacitive touchpanel 4, the metal frame 6A having the through hole K1 and providedbetween the display panel 3 and the control substrate 200, the flexiblesubstrate for a display panel F1 that passes through the through hole K1and couples the display panel 3 and the control substrate 200 to eachother, and the flexible substrate for a touch panel F2 provided with thetouch panel drive circuit 5 that receives a signal output from theelectrostatic capacitive touch panel 4 and couples the electrostaticcapacitive touch panel 4 and the control substrate 200 to each otherwithout passing through the through hole K1.

In this modification example, the flexible substrate for a display panelF1 and the flexible substrate for a touch panel F2 are provided so thatthe flexible substrate for a display panel F1 passes through the throughhole K1 and the flexible substrate for a touch panel F2 does not passthrough the through hole K1. Therefore, also in the present modificationexample, as in the above-described embodiment, the flexible substratefor a display panel F1 and the flexible substrate for a touch panel F2can be provided so that the flexible substrate for a display panel F1and the flexible substrate for a touch panel F2 do not overlap eachother when viewed from the Z axis direction. That is, according to thismodification example, as compared with the comparative example, it ispossible to reduce the influence of the magnetic field generated due tothe current flowing through the wiring provided on the flexiblesubstrate for a display panel F1 on the signal transmitted by the wiringprovided on the flexible substrate for a touch panel F2.

Further, according to the present modification example, since theflexible substrate for a touch panel F2 is provided so as not to passthrough the through hole K1, as compared with the case where the(flexible substrate for a touch panel F2 passes through the through holeK1, the possibility that the touch panel drive circuit 5 provided on theflexible substrate for a touch panel F2 is damaged can be reduced whenthe flexible substrate for a touch panel F2 is attached to the tabletterminal 1A.

Modification Example 4

In the above-described embodiment and the Modification Examples 1 to 3,the case where the flexible substrate for a display panel F1 passesoutside the area surrounded by the plurality of sides included in thecontrol substrate 200 in the plane where the control substrate 200 ispresent and is perpendicular to the Z axis direction, has beenillustrated. That is, in the above-described embodiment and theModification Examples 1 to 3, the case where the flexible substrate fora display panel F1 passes more −Y side than the control substrate 200 inthe plane where the control substrate 200 is present and isperpendicular to the Z axis direction, has been illustrated. However,the present disclosure is not limited to such an aspect, and theflexible substrate for a display panel F1 may pass through the areasurrounded by the plurality of sides included in the control substrate200 in a plane where the control substrate 200 is present and isperpendicular to the Z axis direction.

FIG. 13 is a schematic diagram schematically representing thecross-sectional structure of the tablet terminal 1B when the tabletterminal 1B according to the present modification example is viewed fromthe +X direction. The tablet terminal 1B differs from the tabletterminal 1 according to the embodiment in that a metal frame 6A isprovided instead of the metal frame 6 and a control substrate 200A isprovided instead of the control substrate 200.

As illustrated in FIG. 13, the control substrate 200A has a through holeK2 penetrating the surfaces D1 and D2 included in the metal frame 6A. Inthe tablet terminal 1B, the flexible substrate for a display panel F1 isprovided so as to pass through the through holes K1 and K2. In thetablet terminal 1B, as in the tablet terminal 1 according to theembodiment, the flexible substrate for a touch panel F2 passes throughmore −X side than the metal frame 6A and the control substrate 200A, anddoes not pass through the through holes K1 and K2, as illustrated inFIG. 7.

In the present embodiment, among the sides constituting the through holeK2, the side substantially parallel to the side H5 may be interpreted as“a fifth side”.

That is, the tablet terminal 1B according to the present modificationexample includes the display panel 3 that displays an image, theelectrostatic capacitive touch panel 4 that detects the presence/absenceof contact, the control substrate 200A provided with a control circuitthat controls the display panel 3 and the electrostatic capacitive touchpanel 4, the metal frame 6A having the through hole K1 and providedbetween the display panel 3 and the control substrate 200A, the flexiblesubstrate for a display panel F1 that passes through the through hole K1and couples the display panel 3 and the control substrate 200A to eachother, and the flexible substrate for a touch panel F2 provided with thetouch panel drive circuit 5 that receives a signal output from theelectrostatic capacitive touch panel 4 and couples the electrostaticcapacitive touch panel 4 and the control substrate 200A to each otherwithout passing through the through hole K1 in which the controlsubstrate 200A has a through hole K2, the flexible substrate for adisplay panel F1 passes through the through hole K2, and the flexiblesubstrate for a touch panel F2 does not pass through the through holeK2.

In this modification example, the flexible substrate for a display panelF1 and the flexible substrate for a touch panel F2 are provided so thatthe flexible substrate for a display panel F1 passes through the throughholes K1 and K2 and the flexible substrate for a touch panel F2 does notpass through the through holes K1 and K2. Therefore, also in the presentmodification example, as in the above-described embodiment, the flexiblesubstrate for a display panel F1 and the flexible substrate for a touchpanel F2 can be provided so that the flexible substrate for a displaypanel F1 and the flexible substrate for a touch panel F2 do not overlapeach other when viewed from the Z axis direction. That is, according tothis modification example, as compared with the comparative example, itis possible to reduce the influence of the magnetic field generated dueto the current flowing through the wiring provided on the flexiblesubstrate for a display panel F1 on the signal transmitted by the wiringprovided on the flexible substrate for a touch panel F2.

Further, according to the present modification example, since theflexible substrate for a touch panel F2 is provided so as not to passthrough the through holes K1 and K2, as compared with the case where theflexible substrate for a touch panel F2 passes through the through holesK1 and K2, the possibility that the touch panel drive circuit 5 providedon the flexible substrate for a touch panel F2 is damaged can be reducedwhen the flexible substrate for a touch panel F2 is attached to thetablet terminal 1B.

In the tablet terminal 1B according to the present modification example,the surface D1 of the two surfaces included in the control substrate200A is fixed to the metal frame 6A, and the surface D2, of the twosurfaces included in the control substrate 200A, opposite to the surfaceD1 is provided with a connector CN1 to which the flexible substrate fora display panel F1 is coupled and a connector CN2 to which the flexiblesubstrate for a touch panel F2 is coupled.

In the tablet terminal 1B according to this modification example, sincethe connector CN1 to which the flexible substrate for a display panel F1is coupled and the connector CN2 to which the flexible substrate for atouch panel F2 is coupled are provided on the surface D2 on which thedisplay control circuit 21, the touch panel control circuit 22, and thepower supply circuit 23 are disposed, the wiring in the controlsubstrate 200A can be simplified as compared with the case where theconnector CN1 and the connector CN2 are provided on the surface D1.

Modification Example 5

In the above-described embodiment and Modification Examples 1 to 3, thecase where the connector CN1 is provided on the surface D2 of the twosurfaces included in the control substrate 200 is illustrated. However,the present disclosure is not limited to such an aspect, and theconnector CN1 may be provided on the surface D1 of the control substrate200.

FIG. 14 is a schematic diagram schematically representing thecross-sectional structure of the tablet terminal 1C when the tabletterminal 1C according to the present modification example is viewed fromthe +X direction. The tablet terminal 1C differs from the tabletterminal 1 according to the embodiment in that a metal frame 6A isprovided instead of the metal frame 6 and the connector CN1 is providedon the surface D1 of the control substrate 200 instead of the surfaceD2. In the tablet terminal 1C, the control substrate 200 is providedwith a wiring L1 that couples the connector CN1 provided on the surfaceD1 and the display control circuit 21 provided on the surface D2.Further, in the tablet terminal 1C, the flexible substrate for a displaypanel F1 is provided so as to pass through the through hole K1 includedin the metal frame 6A, and the flexible substrate for a touch panel F2passes through more −X side than the metal frame 6A and does not passthrough the through hole K1 included in the metal frame 6A.

That is, the tablet terminal 1C according to the present modificationexample includes the display panel 3 that displays an image, theelectrostatic capacitive touch panel 4 that detects the presence/absenceof contact, the control substrate 200 provided with a control circuitthat controls the display panel 3 and the electrostatic capacitive touchpanel 4, the metal frame 6A having the through hole K1 and providedbetween the display panel 3 and the control substrate 200, the flexiblesubstrate for a display panel F1 that passes through the through hole K1and couples the display panel 3 and the control substrate 200 to eachother, and the flexible substrate for a touch panel F2 provided with thetouch panel drive circuit 5 that receives a signal output from theelectrostatic capacitive touch panel 4 and couples the electrostaticcapacitive touch panel 4 and the control substrate 200 to each otherwithout passing through the through hole K1, in which of the twosurfaces included in the control substrate 200, the surface D1 fixed tothe metal frame 6A is provided with the connector CN1 to which theflexible substrate for a display panel F1 is coupled, and of the twosurfaces of the control substrate 200, the surface D2 that is oppositeto the surface D1 is provided with a connector CN2 to which the flexiblesubstrate for a touch panel F2 is coupled.

In this modification example, the flexible substrate for a display panelF1 and the flexible substrate for a touch panel F2 are provided so thatthe flexible substrate for a display panel F1 passes through the throughhole K1 and the flexible substrate for a touch panel F2 does not passthrough the through hole K1. Therefore, also in the present modificationexample, as in the above-described embodiment, the flexible substratefor a display panel F1 and the flexible substrate for a touch panel F2can be provided so that the flexible substrate for a display panel F1and the flexible substrate for a touch panel F2 do not overlap eachother when viewed from the Z axis direction. That is, according to thismodification example, as compared with the comparative example, it ispossible to reduce the influence of the magnetic field generated due tothe current flowing through the wiring provided on the flexiblesubstrate for a display panel F1 on the signal transmitted by the wiringprovided on the flexible substrate for a touch panel F2.

Further, according to the present modification example, since theflexible substrate for a touch panel F2 is provided so as not to passthrough the through hole K1, as compared with the case where theflexible substrate for a touch panel F2 passes through the through holeK1, the possibility that the touch panel drive circuit 5 provided on theflexible substrate for a touch panel F2 is damaged can be reduced whenthe flexible substrate for a touch panel F2 is attached to the tabletterminal 1C.

Modification Example 6

In the above-described embodiment and Modification Examples 1 to 5, atablet terminal is illustrated as an example of a display device with anelectrostatic capacitive touch panel, but the present disclosure is notlimited to such an aspect. As the display device with the electrostaticcapacitive touch panel, in addition to the tablet terminal, asmartphone, a personal digital assistant, a car navigation device, andany other display device having the electrostatic capacitive touch panelcan be adopted.

What is claimed is:
 1. A display device with an electrostatic capacitivetouch panel comprising: a display panel having a first side that extendsin a first direction and a second side that extends in a seconddirection intersecting the first direction; an electrostatic capacitivetouch panel having a third side that extends in the first direction anda fourth side that extends in the second direction; a circuit substratehaving a fifth side that extends in the first direction and a sixth sidethat extends in the second direction; a first flexible substrate that ispulled out from the first side of the display panel, intersects thefifth side, and is coupled to the circuit substrate; and a secondflexible substrate that is pulled out from the fourth side of theelectrostatic capacitive touch panel, intersects the sixth side, and iscoupled to the circuit substrate.
 2. The display device with theelectrostatic capacitive touch panel according to claim 1, wherein thedisplay panel is provided between the electrostatic capacitive touchpanel and the circuit substrate.
 3. The display device with theelectrostatic capacitive touch panel according to claim 1, wherein thesecond direction is a direction substantially orthogonal to the firstdirection, the first flexible substrate extends in the second directionat a part intersecting the fifth side of the circuit substrate, and thesecond flexible substrate extends in the first direction at a partintersecting the sixth side of the circuit substrate.
 4. The displaydevice with the electrostatic capacitive touch panel according to claim1, wherein a touch panel drive circuit that drives the electrostaticcapacitive touch panel is provided on a first surface of two surfacesincluded in the second flexible substrate.
 5. The display device withthe electrostatic capacitive touch panel according to claim 4, whereinan antistatic material for preventing electrification in the secondflexible substrate and the touch panel drive circuit is provided on asecond surface of the two surfaces included in the second flexiblesubstrate, which is on a side opposite to the first surface, and thesecond surface is a surface of the two surfaces included in the secondflexible substrate, which is on a side of the circuit substrate.
 6. Thedisplay device with the electrostatic capacitive touch panel accordingto claim 1, further comprising: a frame to which the display panel andthe circuit substrate are fixed.
 7. The display device with theelectrostatic capacitive touch panel according to claim 1, wherein thecircuit substrate is provided with a power supply circuit supplying afirst drive voltage that drives the display panel to the display paneland supplying a second drive voltage that drives the electrostaticcapacitive touch panel to the electrostatic capacitive touch panel, andthe first drive voltage is higher than the second drive voltage.
 8. Thedisplay device with the electrostatic capacitive touch panel accordingto claim 1, wherein the fifth side is longer than the sixth side.
 9. Thedisplay device with the electrostatic capacitive touch panel accordingto claim 1, wherein the display panel has 300 or more pixels arranged inthe first direction, and 200 or more pixels arranged in the seconddirection.
 10. The display device with the electrostatic capacitivetouch panel according to claim 1, wherein the display panel has a sizeof 4 inches or more.
 11. The display device with the electrostaticcapacitive touch panel according to claim 1, wherein the electrostaticcapacitive touch panel has 200 or more touch sensors.
 12. The displaydevice with the electrostatic capacitive touch panel according to claim1, wherein the touch sensor provided in the electrostatic capacitivetouch panel is configured to detect a presence/absence of a touch on thetouch sensor 90 times or more per second.